Boiler



w e e `.A m. l W im f y m wm ,M e o, d M n. m f .Mm l j@ E, s, wm www h w 2 Ww f H pm w a D 3 im d Ww F m W, 3 w www m i Z @J Mmm 4 RP f.. Kw nl/J in?. u. un w Vb no 10 l ,a 0a M f Patented Dec.v 6, 1927.

FRANK B. HOWELL, or BUFaLd'NEW YoRm-nssrenoaro AMERICAN iarmra'ron Am'raNT oFFiCE.

COMPA'NYOFCH'ICAGO, ILIJINQIS, A A'CORPORAVLION lOIE' 'NEW JERSEY.

BOILER.

.Applicationmea December 23, .1920, :ser-mno. 432,689.

' My .invention relates to improvements 1in.

heating apparatusand fthe same has for its object more @particularly :to provide .a 'boiler for heating.purposescapable of yinsuring ythe highest efficiency for `the fuel consumed.

Furtheigsaid Linvention has for its object to provide a boiler having ya `combustion chamber interposed between the fuel receptacle .and the flues, in whichthe .products yof combustion are caused to strike or impinge against a wall Aof heated yrefractory material, in ordertoeffect 'the .completeand economical combustion of 'the gases entering `said combustion chan-iber.A Y

- Further, saidv invention has for its object l. to provide a boiler having avertical fuel receptacle, and a vertical combustion chamberarranged to the rear thereof .and communicating therewith f whereby" the products `of. combustion, as they ypass from the fuel receptacle in said vcombustion chamber, will bey retarded or .delayed in order .to effect 'the due 4consumption of any combustible `gases which maybe liberated .in ythe fuel receptacle and ,pass unconsumed therefrom.Y

Further, said invention has for its object to provide a sectional boiler .having .a ver-k tical fuel receptacleftherein, .and ra, relatively narrow vertical Ycombustionv chamber arrangedvto the'rear ofsaid fuelreceptacle and substantially {co-extensive Vinwidth .and heighttherewith. f y fFurthemsaid invention has for its object to provide a boiler in whichall the air .necessaryto support combustionis received in the top of the boiler` above the fuel magazine,u and then rvfed downwardly within the boiler, preheated, and delivered Vin said condition -into the fuelreceptacle tothe burning 'fuel therein. d Y Y Further, said invention hasffor its object to provide a .boiler formed of a plurality of corresponding Vsections, having 'registering openings therein y. )forming a rcombustion chamber and .having one -of its `rwalls provided with a .facing of refractory material. Other objects will in part be obvious, .and in partbe pointed outyhereinafter. Y To the 'attainmentof the .aforesaidobjects and' ends, my invention .consists .in the lnovel details yof rconstruction, and in `the combination, conne'ction and arrangements of parts hereinafter more Afully described, andthen .pointed .out in the claims. d

` Invthevaccompanying drawings- .Figure l is a vfront elevation illustrating one form of vboiler constructed according to,

and .embodying my invention;

` Fl'guref isa vertical section taken on the line of vFigure 1 {and Figure 3 is .a horizontal section taken .on .theline :3-3 of Figure'2. f i

nsaid drawings `10 .designates a sectional .boiler .of thecross-draft type comprising hollowend sections 11, and a series of intermediate sections 12, eachcomprisingV a front member 12a, .and a jback member 12b. front members 11.2%, and the back `members 12b .areconnected together at their upper and lower -ends rin two transverse series'by 'nipV` ples 129.

The two transverse series of connected members are :arranged .in spaced relation to eachv other to form `therebetween a vertical fuel receptacle v13, .and at V,their opposite ends, adJacent to the tops and bottoms thereof,

said transverseseries are'connected by niplples to the .end Asections 11.., f v

` .Each front member 12a is provided at its lower .end withan .inwardly and downwardly .inclined toe 14, .andabove said toe with a relatively narrow :portion l5 provided upon its oppositeV sides with laterally-extending downwardly and inwardly inclined fins 16 whose' outer edges register with the Ycorresponding edges of the fins on the adjoining sections .and form .air inlet passages 17 com- Y he 'frontportion of each back 'member 12b .iszprovi'ded adjacent -to its upper end with .oppositely-extending.vertical ribs 26a which :extend downwardly towards the base of said Aback member 125, `below which. each of said members is provided with a relatively gnarrow portion 20 provided upon the opposite sides with leternally-extendingl upf wardly and rearwardly inclined tins 20 whose edges register with the corresponding tins of the adjoining sections and form pas` sages 21 through which the product-s of combustion may pass.

Direct-ly to the rear of the laterally-extending ribs 26", each member 12b is provided with oppositely-extending slightly inclined ribs 22 whose lower ends terminate a `short distance above the lower edges of said menibers 12, and form a horizontal, forwardlyextendingl tlange 22"', and an outlet opening 23 below the same. 22b denotes similar horizontal `forwardly-extending flanges arranged about midwav of the height of the rib 22.

The space in the back members 12" intermediate said ribs 22, and the ribs 26a and the tins 20 constitutes a combustion chamber 19 whose several parts communicate with the several lues 24.

In order to ca use said combustion chamber to be maintained at a lxigher temperature than otherwise would be possible, the portion of its rear wall between the horizontal flanges 22, 22b is provided with a lining 19 formed ot lire brick or other suitable refractory material. The combustion chamber 19 is substantially coextcnsive in height with the fuel receptacle and lues, and also substantially coextensve in width therewith, the width et' said combustion chanliber equaling;r the distance between the end sections 11.

The top, back and lower edges of the intermediate back members 12, as well as the peripheral edges of the end sections 11, are provided with laterally-extending, registering ribs 26 which are interrupted or broken away to accommodate certain doors and parts hereinafter described.

Each back member 12"` is provided upon its opposite sides adjacent to its center with laterally-extending `horizontal ribs 2T which extend inwardly trom the rear edge of said member and terminate near the center' thereof, and below said ribs 27 with similar ribs 27which extend from the inclined rib 22 inwardly and terminateuear the center of said Y member 12b, and Serve as battles to form an S-shaped passage or llue extending from the outlet opening 23 to the collecting flue 25 formed at the upper rear corners of said back members 12*l by cutting a quadrant-shaped portion from each ofsaid members. 31 denotes a flanged collar secured to the back ol the rear members 12 to receive a pipe by means of which the boiler .may be connected to a chimney or stack.` It will, of course, be understood that the end sections 11 are each provided with rib` parts 18, 1S, 22, 26, 26C` which register with the corresponding parts 18, 18", 22, 26", etc. of the adjacent faces ot the intermediate section members 12. 12".

The assembled boiler sections `11, 12 and the contained parts are enclosed by a metallic jacket 32 having a heat` insulating linin provided upon its inclined front port-ion wit a fuel opening 45 having a cover 45 and at its lower front portion with an as it oiiening 35 closed by a door 36. Above t e ash pit opening is a slicing opening 33 having a door 34. a

ln the top'ot the casing is an air inlet opening 37 communicating with the upper portion ot the `tucl receptacle or magazine 13. The said air inlet opening 37 is controlled by a damper 38 connected to one end ol a .lever 39 of a thermosensitive, automat-ic regulator 4:0. The other end of said lever 39 is pivotally connected to a check damper 41 controlling an airinlet opening 42 provided in the top of the boiler and communieating with the collecting flue`25. v

Therear wall ot' the boiler is provided at about its middle with a flue cleanout opening 43, provided with a door 44.

4l() denotes a supplemental air supply tube extending through the upper portion of the combustion chamber 10, and having itsends, which extend through the side members 11, provided with` controlling dampers or valves 4:7. v

The operation of the boiler is as follows:

Fuel is introduced in the fuel receptacle 13 through the openings 45, and then ignited. "The air necessary to support combustion is admitted to the up er portion of the fuel receptacle 13 througi thc openin 3T which is automatically controlled by the damper 38, and thencaused to pass downvardly in a plurality ofseparated streams through the air ducts 18 and thence pass through the openings 17 provided between the inclinedfins 16 atthe lower end of the front members 12". The products of combustion and any unburned gases liberated by the fuelwill pass through the outlet passages 21 between the inclined fins 2Oll at the lower `front ends of: the rear members 12h thence pass into the combustion chamber `19 and first strike or impinge upon or against the wall of refractory material 19a and impart some of their `heat thereto. The arrangement of the tins 21 and the passages 20n in the back members 12b is such that the products `of combustion and unconsumed gases will initially be directed upwardly and against the wall of refractory material 19", and momentarily retarded, whereupon the same finally pass downwardly and through the opening 23 into the fines 2&1.` Thehot gases then pass upwardly in an S-shapcd course through said tlues 24 to and into the collecting flue 25 and thence to the stack.

It is to he noted particularly that as all air supplied to the burning fuel is admitted through the opening 37 `in the top of the fuel receptacle lf3, and thence caused to pass through the air ducts, it will become preheated before `it reaches the incandescent fuel ceptacle, two vlaterally extending vertical ribs arranged in spaced relationvvupon the oppof'site sides of each of said back members 'and registering with the corresponding ribs of members and the rear Wall of said combusterminating about midway between the same, substantlallyas specied. Y

,tion chamber and having their inner yends 8; Inra-boiler, 'a fuel receptacle, a Vfront wallgfor said receptacle having openings said front vwall communicating with said 4 openingsand with the upper portion of said thereinforadmitting air thereto, a duct in fuel receptacle, and meansfor admitting air `to the upper portion of said fuel receptacle,

substantially 'as specified. n y p 9. Ina boiler, a fuel receptacle, a front wall for said receptacle having yopenings f` November, f one thousand therein adjacent to its lowerend `for :admitting airthereto, aplurality of ducts in said Y front wall communicating with said open.-

ings, andwith the upper portion ofsaid receptacle, and means for admitting the air' necessary to support combustion to theupper lportion of said fuel receptacle, substantially as specified. v v

10.In a boiler, afuel receptacle, ya front wall for, saidreceptacle comprisinga series V.of hollow, water-backed members, fins eX- .tending from the opposite sides of said members and forming air'passages therebetween, laterallyextending'peripheral ribs arranged i at the opposite sides of the upper portions of said members ,along theedges thereof-and forming a plurality of separatedgair ,ducts Y communicating at their lower ends with-said air passages and atl their upper'endsQwi-th theupper portion ofsaid fuel receptaclev;

`4for supplying preheated airto said fuelgre- Vceptacle, substantially as specified'. n

Signed lat the city of1Buii'alo-,-'ErieCounty, in the State of New York, this 23d 'day Of twenty. ff vn l B; HOWELL t nine hundred yand Los 1,596

`or the combustible gases, and thereby insure complete combustion of the lfuel with- `out ainduly `lowering lthe temperature thereof.

Further, it is to be noted `that `by the `provision olf the `relatiwely narrow `combustion chamber 19 to the rcarofthe fuel receptacle, `and `the lining `of the rear wall thereof `with a suitable refractmy material 19L1the prodnets of icolnbustion are initially delayed therein in their` upassage `to the fines, and caused to impart some lof their heatto the wallsiof-said combustion chamber and thereby `'nsure the maintaining of said combus tinmchamber at extremely high temperature, which `results in all gases liberated iby the fuel lbeing completely consumed.

Having ithus described my said invention what `I `claim and desire to secure b y Letters Patent is:- y y i l 1. A boiler comprising "a fuel receptacle, iluesat the rearthereof, spaced vertical walls intermediate `said fuel receptacle and said *filles forming a relatively narrow combustion chamber disposed vertically between the nume, La `lining of `refractory material upon the lower portion of the rear wall of said combustion chamber, openings in the front wall of said combustion chamber for receiving the products of combustion and directing the same tanswrscly of said chamber against said lining, and means for supplying secondary air to said combustion chamber at the upper end thereof; said combustion chamber comnnmicating with said ues at the lower end thereof, substantially as specified.

2. A boiler comprising a fuel receptacle, fluesat the rear thereof, a vertical combostion chamber arranged between said fuel receptacle and said fines. and substantially coextensiye in height and width therewith; said combustion chamber becoming larger in area as it approaches the top, an outlet to said flues at the lower end of said eombus tion chamber, and openings in the front wall of said combustion chamber for receiving the products of combustion and directing the same against the rear wall of said combustion chamber; said openings being arranged to direct the products of combustion towards the enlarged end of said combustion chamber opposite said outlet, substantially as specified.

3. A boiler comprising a fuel receptacle, filles at the rear thereof, a narrow vertical combustion chamber interposed between said fuel receptacle and said flues and becoming larger in area as it approaches the top, an outlet to said flues at the lower end of said combustion chamber, and a lining of refractory material upon the rear wall of said colnbustion chamber; the front wall of said combustion chamber having rearwardly and upwardly inclined openings therein for receiving the products of combustion and di chamber `for supplying secondary air there' to; the front wall of said combustion chamber having inclined openingstherein forreceiving the products of combustion and `directing the same to 'ards said secondary :air

means and against the rear wall of said combustion chamber, substantially as specified. l i

5. A boiler comprising a vertical fuel receptacle.` fines at the rear thereof, `a vertical combustion chamber having a relatively nar row base portion increasing in arca as it appreaches the upper end thereof arranged fbetween said fuel receptacle and said flues; and a lining of refractory material upon the rear wall of said combustion chamber; the :front wall of said combustion chamber having rearwardly and upwardly inclined openings therein for receiving the products of combustion and directing the same against the refractory lining upon the rear wall of said combustion chamber1 substantially as specified.

G. A boiler comprising end sections, and a plurality of intermediate sections each comprising a front member and a back mena-` her arranged in spaced relation thereto and forming a fuel receptacle therebetween, two laterally-extending vertical ribs provided in spaced relation upon the opposite sides of each of said back members and registering with the corresponding ribs of adjacent sections and forming a relatively narrow comingly recessed adjacent to their lower ends c to form passages extending from the base of .said fuel receptacle to the base of said combastion chamber, and fines 'formed intermediate said back members extending from ,said combustion chamber to the smoke outlet of the boiler. substantially as specified.

7. A boiler comprising end sections, and a plurality of intern'iediate sectidns each comprising a front member and a back member arranged in spaced relation thereto and forming a fuel receptacle therebetween, a housing enc-losing said sections and provided with an air inlet opening comnmnieating with said fuel receptacle; said front member having a plurality of air inlets therein comnnlnicating with said fuel receptacle, and a plurality of air ducts connecting said air inlets with the upper portion of said fuel re 

